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Detecting Lies By Use Of A Polygraph Morally, it is wrong to lie to another person a view that is also supported by the biblical teaching and hence the regular conditioning in our minds is, to tell the truth. Therefore no human being would want to find themselves lying, but when one is subjected to pressure especially if they are on the downside they are probably going to lie. The body through several physiological processes always responds to instances in which we tell lies since at that time one is nervous and anxious which triggers the physiological changes which can be monitored using lie detectors. A polygraph is the main machine that has been widely used to detect lies since the machine depends on the physiological changes. There are observable changes that are likely to occur when one is lying, and one of the physiological change is the rise in breathing rate. Immediately after the rise in the breathing rates shallow breathing which is characterized by decrease in depth of the breath occurs. Such variations are easily detected by the polygraph lie detector since the machine has a pneumographic aspect. The the rate of blood pressure also rises sharply in case one is not telling the truth. The the cardiographic aspect of the polygraph ensure that it also easily detects the change in blood pressure. The amount of sweat coming out through the skin is also bound to increase at the event of one telling a lie. The the electrical resistance of the subject’s skin is measured and any changes noted by the polygraph. The the method usually measures the electrical conductivity of the skin which is obliged to increase with the increase in an amount of sweat which is the electrolyte, but it does not measure the actual amount of sweat discharged. Since sweat is ionic it is used as an electrolyte in this case, and any increased conductivity means increased amount of sweat which implies that the subject lied.
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Results collected by the polygraph are represented in graphical form. In earlier times the polygraphs used to trace the measurements on to a chart paper where after the test the examiner would analyze the results. But in the modern technological era polygraphs are connected to laptops which saves all the information hence eliminating the tiresome work of analyzing the results using papers. Computers also provide a safe storage for data in case any further analysis is required or any future reference.
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Using a digital polygraph has several other benefits. One of the benefits is that experts have developed a software that helps to ease the process of analyzing data and information. The the software is also designed to convert the information into the required format for analysis by the examiner. One may be required to use other methods of detecting lies and not depend on the polygraph only.

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